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Treatment Study on the Combustion Gas of Medical Waste  

Lee, Sung-Jin (Korea Polytechnic University Graduate School of Knowledge-based Technology & Energy Department of Chemical Engineering & Biotechnology)
Seo, Man-Chul (Korea Polytechnic University Graduate School of Knowledge-based Technology & Energy Department of Chemical Engineering & Biotechnology)
Publication Information
Journal of environmental and Sanitary engineering / v.23, no.3, 2008 , pp. 1-8 More about this Journal
Abstract
Currently, medical waste stoker incinerator is widely used in the emission control technology of health-care risk waste and miscellaneous contaminated waste. In the past, wet type control technology was used to remove the major harmful gaseous contaminants of medical waste such as HCl, $NO_x,\;SO_2$, CO, DUST, Dioxin. However, the treatment cost for wastewater was high and it has a disadvantage for frozen system during winter season. Therefore, in order to obtain effective treatment, the dry type control technology was developed and widely used to remove the gaseous contaminants. In this study, pre-coated bag filter using hydrated lime, ($Ca(OH)_2$), was applied to the dry type control system and the optimum dose of hydrated lime was investigated. The treatment results showed that the dust collection rate was approximately 26.7%. Moreover, the HCl removal rate using pre-coated bag filter ($50mg/sm^3\;Ca(OH)_2$) was 13.52%, which was significantly higher than 3.26% obtained from conventional bag filter.
Keywords
medical waste; pre-coated bag filter; combustion gas; $Ca(OH)_2$;
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